DataMatrix barcodes in a PDF

I have had some questions about this topic and thought it a good time to post up a sample showing just how easy it is.  Please download the sample here: DataMatrix sample.

The WPF team made this sample and it shows how to create the DataMatrix barcode.

  String text = "TYPE 3523 - ETWS/N FE- SDFHW 06/08";
            PdfDataMatrixBarcode dataMatrixBarcode = New PdfDataMatrixBarcode(text);
            // rectangular matrix
            dataMatrixBarcode.Size = PdfDataMatrixSize.Size16x48;
            dataMatrixBarcode.XDimension = 4;
            dataMatrixBarcode.Draw(page, New PointF(25, 300));